

class Student(object):
    def __init__(self):
        self.name = 'Michael'

    def __getattr__(self,attr):
        if attr == 'score':
            return 99
        if attr == 'age':
            return lambda:25
        raise AttributeError('\'Student\' object has no attribute \' %s''' %attr)

s = Student()
print(s.name)
print(s.score)
print(s.age())
